Hi,
I have tried Turbo Jam and it has been wonderful for me. Owned for about 8 months now, and bought a second set for my sister-in-law as well. Both of us have had very good results (her in her tummy, and myself in my thighs). Very high energy and fun, but takes a while to work up to. I exercise about 5 times per week already, but still made me very sore. I've seen a big difference in my abs and outside of my thighs. I have more trouble in my hip area. I recommend, but for beginners, start very gradually. The FIRM transfirmer is a nice workout as well (hips and thighs), again taking your time to start. As with any workout they recommend you talk with your Dr. before beginning, which I agree. Thumbs up for this one.